Water and air relief valve.



J. L. FITTS.

WATER AND AIR RELIEF VALVE.

APPLICATION FILED APR. 4, 1907.

920,556. Patenta May 4, 1909.

91. IJ, a

0 n 2 R ll E UNITED STATES PATENT OFFICE.

JAMES LOGAN FITTS, OF MEROHANTVILLE, NEW JERSEY, ASSIGNOR TO WARRENWEBSTER & COMPANY, A CORPORATION OF NEW JERSEY.

WATER AND AIR RELIEF VALVE.

Specification of Letters Patent.

Patented May 4, 1909.

Application med s in 4, 1901. Serial No. 366,244.

sists of a hollow shell it is necessary that it shall be kept free fromwater to prevent it becoming water logged and inert. As this movablepart is frequently subjected to violent movements under the'action ofwater hammering or a sudden inrush of water, 1t is subjected toconsiderable strain, and 1n certain forms is liable to break open at theseams and admit water to the interior. This is particularly the case inthat class of valves in which the movable part consists of a hollowshell carried by a tube the end of which carries the valve-piece. Owingto the connection of the shell with said tube, the greatest jars arefelt at the points of connection, and it is one of the objects of myinvention to so unite the tube and shell as to materially strengthen thestructure and greatly reduce the liability of the opening of the jointsunder the jars to which the shell and tube are subjected.

It is also an object of my invention, while obtaining increasedstrength, to simplify the construction and the assembling of the partsand to render the structure reversible so that either end may be used tocontrol the outlet.

tal section of the same on the line A-A of Fig. 1.

Q j and constitutes a movable part controlled (4 is the valve-bodyhaving an inlet '6' and outlet 0 and the valve-passageway orthoroughfare d, which latter is preferably in a a removable threadedseat into the body.

by the conditions, such as the accumulation of water, in the valve-body.This part consists of a hollow shell carried by a central tube 9, theend of which constitutes the valve-piece f. This tube 9 is swaged upnear each end to form annular shoulders h and the shell is composed oftwo cup-shaped members is 0 having apertures by which they are fittedover the tube with the edges of the metal at-the apertures restingagainst the shoulders and soldered to them. The

outer edges of the cup-shaped members 6 e are fitted one under the otherand are soldered together as at 6 The tube 9 projects at each end beyondthe shell, so that the part c is reversible and either end may be usedas the valve-piece.

jf is a guide rod which is carried by the cap in and extendsasubstantial distance into the tube g.i-This \.guide is preferablyprovided with "aspiral groove m forming a spiral ai-r passageway betweenthe tube and guide from the thoroughfare Z to the upper part of thevalve-body above the float.

n is a depending wall carried .by the cap and surrounding the shell andpreferably extending below the inlet 6; and 0 is a screen surroundingthe Wall and shell and clamped between the cap and base of thevalve-body. 72 1s a small orifice in one end of the tube 9 forming aninlet into the upper part of the shell, and p is a similar orifice inthe other end of the tube forming an outlet from the lower part of theshell 7 The upward movement of the shell and its tube 9 to open thethoroughfare (Z is caused by the accumulation of water in the valvebody.

It is essential to the proper operation of metal of the shell and towhich those edges are soldered materially strengthens the oints andreduces the liability of openings being formed. The shoulders alsoinsure the proper fitting together of the parts 6' c with the tube 9projecting at the proper distance at each end to form a valve-piece fthus rendering the device reversible.

The girth seam 0 which results from making the shell of two members e 6re-' sults in materially strengthening the cylinder, and when the edgesare properly lapscamed and soldered there is little liability of thejoint breaking open. In addition to these precautions for preventing theentry of water into the shell from the outside, I provide the smallopenings '29 p in the tube 9 to efiect the immediate discharge of anywater thatinay enter. This construction is particularly useful when thevalve is used in vacuum systems in which a suction or low pressure ismaintained in the outlet. Owing to the factthat the upper a erture isnear the upper part of the gui e j, while the lower one is near theopening d, it results that there will be a reduction in the suction atthe upper aperture 79. There will therefore always be a lower pressureor greater suction on, the lower aperture prthan on the upper, so thatany water that may find its way into the shell 6 will immediately'beextracted through the lower aperture into the tube 9 and thence throughthe passagewa (l.

\Vhi'le I- have shown my improvements embodied in a valve having thesurrounding wall a and screen 0, these, as well as other details ofconstruction which do not afiect the improvements in the constructionand operation of the shell e and its tube g, may

be varied or omitted without affecting the invention.

What I claim is as follows:

1. A reversible fitting for steam radiator I tegral shoulders h 7i; anda hollow shell having aperturcs'fitted over said tube with the metal atsaid apertures resting against 1 shell,'and a guide-piece extending intosaid" tube substantially be 0nd the small upper opening therein andorming with the walls of the tube a restricted passage way between theinterior of the body and the outlet and extending past the upper smallopenings in the tube.

3. A valve consisting of a body having an inlet and an outlet, a tubecarrying atubular valve-piece,' a hollow shell carried by said tube andcontrolled by the accumulation of water in the body to operate thevalvegiiece, a spirally grooved guide piece exten i the walls thereof arestricted s iral passageway between the interior oft e valve-body andthe .outlet, said tube being provided near the top and bottom with smallopenings into the interior of the shell.

In testimony of which invention, I have hereunto set my hand.

JAMES LOGAN FITTS.

Witnesses:

PHILIP Y. QUINN, HENRY A. STRA'ITON.

ng into said tube and forming with

